HT Series Zirconia Discs

Lodden

Strong zirconia discs for CAD/CAM milling, for posterior crowns, long bridges, full-arch restorations and implant work where strength comes first. Of the manufacturer’s series, HT is the strongest and the least translucent: the choice for long bridges, frameworks and implant work including abutments. It comes white, for shading in the lab, or pre-colored to the chosen shade — fewer manual staining steps and a more consistent workflow.

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Key features

1350 MPa flexural strength — for multi-unit bridges, full arches and implant work
37% translucency — practical optics for functional posterior restorations
Fracture toughness of 6.5 MPa·m½, per the manufacturer
HT-C pre-colored in VITA16 and BL1–BL4 — less manual staining, a more consistent workflow
White HT-W for shading with liquids, and HT-Sirona for Sirona systems
98 mm, 95 mm and AG formats, 10–30 mm thick

Technical specifications

Type: high-strength zirconia discs for CAD/CAM milling
Flexural strength: 1350 MPa
Translucency: 37%
Fracture toughness: 6.5 MPa·m½
CTE (25–500°C): (10.5 ± 0.5) × 10⁻⁶ K⁻¹
Versions: HT-W (white) · HT-C (pre-colored) · HT-Sirona (white)
Shades: white (HT-W, HT-Sirona) · VITA16 + BL1–BL4 (HT-C)
Format: 98 mm · 95 mm · AG · Sirona
Thickness: 10, 12, 14, 16, 18, 20, 22, 25, 30 mm
Indications: posterior crowns, copings, 5–7-unit bridges, full arch, implant restorations and bridges, abutments